"You're killing a newborn baby," says one astrophysicist.

Long-running experiment concludes muon is no more magnetic than theory predicts.

Astronomers approach unusual observation with caution and excitement.

Curious similarity among space particles points to neutron star mergers

Reorganization could shift mission of the largest U.S. funder of physical sciences.

Dark matter envoy would dim Big Bang’s afterglow

Quantum bits’ delicate states preserved by expanding them

The W boson has precisely the mass predicted by physicists' standard model.

In AU$940 million deal, PsiQuantum will build “utility scale” facility

Billions of gigabytes from accelerators and x-ray sources could swamp national labs.

Portable low-field scanners could revolutionize medical imaging in nations rich and poor-if doctors embrace them.

Google's error-correction scheme works better as it gets bigger.

"Hubble tension" could be a signal of new physics. But deciphering it may not be simple.

New telescopes and neutrino detectors must wait for work on polar facilities

Energy department opens new competition to run struggling Fermilab

New effort to study big bang afterglow heads to-do list.

New spending plan repeats many themes that Congress failed to support fully this year